期刊
ADVANCED FUNCTIONAL MATERIALS
卷 17, 期 14, 页码 2500-2508出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.200600635
关键词
-
A new partially fluorinated cationic surfactant, 1-(10-perfluorooctyldecyl)pyridinium bromide monohydrate, is synthesized and used as the template for mesoporous ceramic and inorganic-organic hybrid particles. Several hydrolyzed alkoxide precursors are shown to co-assemble with this surfactant to form hollow vesicle-like particles, and the effect of changing the alkoxide chemical structure on the formation of these particles is examined. Tetramethoxysilane produces cubic or columnar particles without hollow cavities, but all other tetra-n-alkoxysilanes tested up to the n-butoxide produce hollow particles. As the alkoxide length increases, the shell structure changes from multilayered (with Si(OC2H5)(4)) to a single thin layer (with Si(OC3H7)(4)) to a single thick layer (with Si(OC4H9)(4)). The stability of the fluorocarbon bilayers allows similar vesicular structures to be obtained in organic-inorganic hybrids prepared with bridged alkoxysilanes. Ethylene-bridged silanes display similar structures to tetra-alkoxysilanes. However, the hollow structures appear to partially collapse when the bridging chain is too long (octylene) and no hollow particles are formed with bis(trialkoxysilylpropyl)amines.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据